Hands-On Math: Interactive Color Tiles provides students with an open-ended tool for exploring fundamental math concepts. The use of a Color Tiles is a way to give students insight into a variety o...More: lessons, discussions, ratings, reviews,...

PolygonFlux lets you experience the flow of energy inside a polygon. In simplest terms, it traces the path of a point bouncing around inside a polygon of your choice, generating a pretty pattern.
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Every school child has played with a pool ball on a rectangular table or a carom puck on a square board. What would change if the table were a triangle or a pentagon? PolygonTrix is a game that s...More: lessons, discussions, ratings, reviews,...

An exercise (in English and Spanish) in using an interactive 2D Euclidean symmetry pattern editor. This activity was originally written as one of the stations in Frisbie Middle School's Multicultural ...More: lessons, discussions, ratings, reviews,...

A middle school lesson to help students understand why equilateral triangles, squares, and regular hexagons tessellate regularly in the Euclidean plane. In addition to alignment to NCTM Standards and ...More: lessons, discussions, ratings, reviews,...

Explore tessellations of the sphere, Euclidean plane, and hyperbolic plane while creating colorful works of art. Decorate your tessellation with your own favorite images, or select images from the ...More: lessons, discussions, ratings, reviews,...

A shareware program for creating symmetric planar illustrations. With Tess, while you draw you can automatically maintain the symmetry group you have chosen; 11 rosette, all 7 frieze, and all 17 wallp...More: lessons, discussions, ratings, reviews,...

This tool allows you to build tessellations and other designs by attaching the corners of various shapes to one another. To make a tessellation, you need to create an arrangement of repeating shapes w...More: lessons, discussions, ratings, reviews,...

Learn how to make snowflake patterns and create a five-pointed star. The interactive site offers both a Flash tool and a faster, more fully-featured Java applet that allows you to save the snowflakes ...More: lessons, discussions, ratings, reviews,...

A Geometer's Sketchpad tool for constructing distorted images that can be viewed undistorted with a cylindrical mirror. The file contains tabbed pages with several images, a grid for students to draw...More: lessons, discussions, ratings, reviews,...

The idea of this activity is to introduce students to some of the basic transformational behaviors. The emphasis is less on properties than on relationships between objects that have been reflected, r...More: lessons, discussions, ratings, reviews,...

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the author(s)
and do not necessarily reflect the views of the
National Science Foundation.